/*
 * @(#)ConstraintType.java        1.0 19-Apr-2009
 *
 * Copyright 2008 Thomas Ford. All rights reserved.
 */


package edu.napier.soc.xfdm.model;

/**
 * A type of constraint.
 *
 * @version 1.0, 17-Apr-2009
 * @author  Thomas Ford
 */
public enum ConstraintType {

	/** Not-null. */
	TOTAL,
	
	/** Cannot change value after being assigned a not-null value. */
	FIXED,

	/** Unique. */
	UNIQUE;
}